{ FOR_SCH_NUM_BITS_IDXr }

à otherwise the mobile station shall set (initialize) N_FSCH_BITS_IDX_SET_s[FOR_SCH_ID_r] = {FOR_SCH_NUM_BITS_IDX_r} and for i=1, …, FOR_SCH_NUM_BITS_IDX_r the mobile station shall add FOR_SCH_NUM_BITS_IDX_r - VAR_FSCH_RATE_OFFSET_s[FOR_SCH_ID_r][FOR_SCH_NUM_BITS_IDX_r][i] to the set specified by N_FSCH_BITS_IDX_SET_s[FOR_SCH_ID_r]

 If USE_FLEX_NUM_BITS_s is equal to '0' or if USE_FLEX_NUM_BITS_s is equal to '1' and FSCH_NBIT_TABLE_ID_s[FOR_SCH_ID_r] is equal to ‘0000’, then the mobile station shall set N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r], the set of number of information bits per frame as follows.

 If USE_FLEX_NUM_BITS_s is equal to '1' and FSCH_NBIT_TABLE_ID_s[FOR_SCH_ID_r] is not equal to ‘0000’, then

à the mobile station shall set N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r], the set of number of information bits per frame as follows.
The i^th member of the set N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r] is equal to NUM_BITS_s[FSCH_NBIT_TABLE_ID_s[FOR_SCH_ID_r]] [N_FSCH_BITS_IDX_SET_s[FOR_SCH_ID_r][i]], where N_FSCH_BITS_IDX_SET_s[FOR_SCH_ID_r][i] denotes the i^th member of the set N_FSCH_BITS_IDX_SET_s[FOR_SCH_ID_r] and,

à the mobile station shall set FSCH_CRC_LEN_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r], the set of number CRC bits per frame as follows.

– For the i^th record of the Forward Supplemental Channel Active Set (for all values of i between 1 and NUM_SUP_SHO+1) specified in this message, the mobile station shall store the following entries corresponding to the SCCL_INDEX_r as follows:

+ PILOT_PN_s[FOR_SCH_ID_r][SCCL_INDEX_r][i] = PILOT_PN_r,

+ Set the ADD_PILOT_REC_INCL field to ADD_PILOT_REC_INCL_r. If ADD_PILOT_REC_INCL_r equals ‘1’, the mobile station shall store the following:

 Set the PILOT_REC_TYPE field of PILOT_REC to PILOT_REC_TYPE_r.

 If PILOT_REC_TYPE_r equals ‘000’, the mobile station shall set the TD_POWER_LEVEL field of PILOT_REC to TD_POWER_LEVEL_r and set the TD_MODE field of PILOT_REC to TD_MODE_r.

 If PILOT_REC_TYPE_r is equal to ‘001’, the mobile station shall.

– Set the AUX_PILOT_WALSH_CODE field of PILOT_REC to AUX_PILOT_WALSH_r with the Walsh Code length specified by WALSH_LENGTH_r.

 If NGHBR_PILOT_REC_TYPE_r is equal to ‘010’, the mobile station shall:

– Set the AUX_PILOT_WALSH_CODE field of PILOT_REC to AUX_WALSH_r with the Walsh Code length specified by WALSH_LENGTH_r.

– Set the AUX_TD_POWER_LEVEL field of PILOT_REC to AUX_TD_POWER_LEVEL_r.

– Set the TD_MODE field of NGHBR_PILOT_REC to TD_MODE_r.

 If PILOT_REC_TYPE_r is equal to ‘011’, the mobile station shall:

– Set the SR3_PILOT_POWER1 field of PILOT_REC to SR3_PILOT_POWER1_r.

– Set the SR3_PILOT_POWER2 field of PILOT_REC to SR3_PILOT_POWER2_r.

 If PILOT_REC_TYPE_r is equal to ‘100’, the mobile station shall:

– Set the SR3_PILOT_POWER1 field of PILOT_REC to SR3_PILOT_POWER1_r.

– Set the SR3_PILOT_POWER2 field of PILOT_REC to SR3_PILOT_POWER2_r.

– Set the AUX_PILOT_QOF field of PILOT_REC to QOF_r.

– Set the AUX_PILOT_WALSH_CODE field of PILOT_REC to AUX_PILOT_WALSH_r with the Walsh Code length specified by WALSH_LENGTH_r.

– If ADD_INFO_INCL1_r is equal to ‘1’, set the AUX_PILOT_QOF1 field of PILOT_REC to QOF1_r and set the AUX_PILOT_WALSH_CODE1 field of PILOT_REC to AUX_PILOT_WALSH1_r with the Walsh Code length specified by WALSH_LENGTH1_r.

– Otherwise, set the AUX_PILOT_QOF1 field of PILOT_REC to QOF_r and set the AUX_PILOT_WALSH_CODE1 field of PILOT_REC to AUX_PILOT_WALSH_r with the Walsh Code length specified by WALSH_LENGTH_r.

– If ADD_INFO_INCL2_r is equal to ‘1’, set the AUX_PILOT_QOF2 field of PILOT_REC to QOF2_r and set the AUX_PILOT_WALSH_CODE2 field of PILOT_REC to AUX_PILOT_WALSH2_r with the Walsh Code length specified by WALSH_LENGTH2_r.

– Otherwise, set the AUX_PILOT_QOF2 field of PILOT_REC to QOF_r and set the AUX_PILOT_WALSH_CODE2 field of PILOT_REC to AUX_PILOT_WALSH_r with the Walsh Code length specified by WALSH_LENGTH_r.

+ QOF_MASK_ID_SCH_s[FOR_SCH_ID_r][SCCL_INDEX_r][i] = QOF_MASK_ID_SCH_r,

+ FOR_SCH_CC_INDEX_s[FOR_SCH_ID_r][SCCL_INDEX_r][i]= CODE_CHAN_SCH_r.

+ If the mobile station supports Code Combining Soft Handoff, and CCSH_INCLUDED is set to ‘1’, set CCSH_ENCODER_TYPE_s[FOR_SCH_ID_r][SCCL_INDEX_r][i]= CCSH_ENCODER_TYPE_r.

+ If the mobile station supports Code Combining Soft Handoff, and CCSH_INCLUDED is set to ‘0’, set CCSH_ENCODER_TYPE_s[FOR_SCH_ID_r][SCCL_INDEX_r][i]= 0 (default Turbo Encoder type)

• The mobile station may soft-combine the Forward Supplemental Channel frames received on the Forward Supplemental Channels in the same Forward Supplemental Channel Active Set.

• If the mobile station supports any Radio Configuration greater than 2, the mobile station shall perform the following:

– If FPC_INCL_r is equal to ‘1’, the mobile station shall:

+ Set FPC_MODE_SCH_s to FPC_MODE_SCH_r.

+ Set FPC_SEC_CHAN_s to FPC_SEC_CHAN_r.

– If NUM_SUP_r is included and not equal to ‘00’, for each Supplemental Channel included in the message, the mobile station shall:

+ Set SCH_ID_s to SCH_ID_r.

+ Set FPC_SCH_FER_s to FPC_SCH_FER_r.

+ Set FPC_SCH_INIT_SETPT_s as follows:

• 
  If FPC_SCH_INIT_SETPT_OP_r is set to ‘0’, set FPC_SCH_INIT_SETPT_s  to FPC_SCH_INIT_SETPT_r.
  
• 
  If FPC_SCH_INIT_SETPT_OP_r is set to ‘1’:
  

• 
  If FPC_PRI_CHAN_r is equal to ‘0’, set FPC_SCH_INIT_SETPT_s  to (FPC_FCH_CURR_SETPT_s + FPC_SCH_INIT_SETPT_r).
  
• 
  Otherwise, set FPC_SCH_INIT_SETPT_s  to (FPC_DCCH_CURR_SETPT_s + FPC_SCH_INIT_SETPT_r).
  

+ Set FPC_SCH_MIN_SETPT_s to FPC_SCH_MIN_SETPT_r.

+ Set FPC_SCH_MAX_SETPT_s to FPC_SCH_MAX_SETPT_r.

• If RPC_INCL is equal to ‘1’, the mobile station shall set RLGAIN_SCH_PILOT_s to RLGAIN_SCH_PILOT_r.

• If NUM_3X_CFG_r is not equal to ‘00’, the mobile station shall store the Forward 3X Supplemental Channel Configuration associated with the identification of Forward Supplemental Channel (NUM_3X_CFG_s = NUM_3X_CFG_r).

• For each 3X SCH record included in this message, the mobile station shall update the Forward Supplemental Channel Code list associated with the FOR_SCH_ID_r as follows:

– For the i^th record of the Forward Supplemental Channel Active Set (for all values of i between 1 and NUM_SUP_SHO+1) specified in this message, the mobile station shall store the following three entries corresponding to the SCCL_INDEX_r as follows:

+ If 3X_SCH_LOW_INCL_r equals ‘1’, set QOF_MASK_ID_SCH_LOW[FOR_SCH_ID_r][SCCL_INDEX_r][i] to QOF_MASK_ID_SCH_LOW_r and FOR_SCH_CC_INDEX_LOW[FOR_SCH_ID_r][SCCL_INDEX_r][i] to CODE_CHAN_SCH_LOW_r. Otherwise, set QOF_MASK_ID_SCH_LOW[FOR_SCH_ID_r][SCCL_INDEX_r][i] to QOF_MASK_ID_SCH[FOR_SCH_ID_r][SCCL_INDEX_r][i] and FOR_SCH_CC_INDEX_LOW[FOR_SCH_ID_r][SCCL_INDEX_r][i] to CODE_CHAN_SCH[FOR_SCH_ID_r][SCCL_INDEX_r][i].

+ If 3X_SCH_HIGH_INCL_r equals ‘1’, set QOF_MASK_ID_SCH_HIGH[FOR_SCH_ID_r][SCCL_INDEX_r][i] to QOF_MASK_ID_SCH_HIGH_r and FOR_SCH_CC_INDEX_HIGH[FOR_SCH_ID_r][SCCL_INDEX_r][i] to CODE_CHAN_SCH_HIGH_r. Otherwise, set QOF_MASK_ID_SCH_HIGH[FOR_SCH_ID_r][SCCL_INDEX_r][i] to QOF_MASK_ID_SCH[FOR_SCH_ID_r][SCCL_INDEX_r][i] and FOR_SCH_CC_INDEX_HIGH[FOR_SCH_ID_r][SCCL_INDEX_r][i] to CODE_CHAN_SCH[FOR_SCH_ID_r][SCCL_INDEX_r][i].

• 
  The mobile station shall set PILOT_GATING_USE_RATE to ‘0’ and shall start the continuous reverse pilot at the specified action time and, if a F-PDCH is assigned, the mobile station shall start the continuous R-CQICH as defined in [3].
  
• 
  If a F-PDCH is not assigned and the Fundamental Channel was previously established prior to transitioning to the Control Hold Mode, the mobile station shall start processing F-FCH and start transmitting on R-FCH at the action time of the message. The mobile station shall establish the Fundamental Channel with the same configuration as previously used.
  

• 
  The mobile station shall store the Forward Supplemental Channel Identification (FOR_SCH_ID[FOR_SCH_ID_r]_s = FOR_SCH_ID_r).
  
• 
  The mobile station shall store the Forward Supplemental Channel Multiplex Option (FOR_SCH_MUX[FOR_SCH_ID_r]_s = FOR_SCH_MUX_r).
  
• 
  The mobile station shall store the Forward Supplemental Channel Radio Configuration (FOR_SCH_RC[FOR_SCH_ID_r]_s = SCH_RC_r).
  

• 
  The mobile station shall store the Forward Supplemental Channel Coding Type (FOR_SCH_CODING[FOR_SCH_ID_r]_s = CODING_r).
  

- If FRAME_40_USED_r is equal to '1', the mobile station shall set FOR_SCH_FRAME_LENGTH_s[FOR_SCH_ID_r] to '01' (i.e., 40 ms frame length).

• 
  If FRAME_80_USED_r is equal to '1', the mobile station shall set FOR_SCH_FRAME_LENGTH_s[FOR_SCH_ID_r] to '10' (i.e., 80 ms frame length).
  
• 
  F_MAX_RATE_IDX_s[FOR_SCH_ID_r] = MAX_RATE_r.
  

• 
  The mobile station shall store the Reverse Supplemental Channel Identification (REV_SCH_ID[REV_SCH_ID_r]_s = REV_SCH_ID_r).
  
• 
  The mobile station shall store the Reverse Supplemental Channel Multiplex Option (REV_SCH_MUX[REV_SCH_ID_r]_s = REV_SCH_MUX_r).
  
• 
  The mobile station shall store the Reverse Supplemental Channel Radio Configuration (REV_SCH_RC[REV_SCH_ID_r]_s = SCH_RC_r).
  
• 
  The mobile station shall store the Reverse Supplemental Channel Coding Type (REV_SCH_CODING[REV_SCH_ID_r]_s = CODING_r).
  

- If FRAME_40_USED_r is equal to '1', the mobile station shall set REV_SCH_FRAME_LENGTH_s[REV_SCH_ID_r] to '01' (i.e., 40 ms frame length).

• 
  If FRAME_80_USED_r is equal to '1', the mobile station shall set REV_SCH_FRAME_LENGTH_s[REV_SCH_ID_r] to '10' (i.e., 80 ms frame length).
  
• 
  R_MAX_RATE_IDX_s[REV_SCH_ID_r] = MAX_RATE_r.
  

The mobile station shall send a Mobile Station Reject Order with the ORDQ field set to ‘00000111’ (message can not be handled by the current mobile station configuration), if any of the mobile station’s forward supplemental channel configuration parameters for the corresponding Supplemental Channel is NULL.

Otherwise, the mobile station shall store the following information and process the Forward Supplemental Burst as specified in 2.6.6.2.5.1.1:

• Set FOR_SCH_START_TIME_INCL_s[FOR_SCH_ID_r] to ‘1’

• FOR_SCH_START_TIME_s[FOR_SCH_ID_r] = FOR_SCH_START_TIME_r

• FOR_SCH_DURATION_s[FOR_SCH_ID_r] = FOR_SCH_DURATION_r

• SCCL_INDEX_s[FOR_SCH_ID_r] = SCCL_INDEX_r

• If PILOT_GATING_USE_RATE is set to ‘1’, the mobile station shall perform the following:

• 
  The mobile station shall set PILOT_GATING_USE_RATE to ‘0’ and shall start the continuous reverse pilot at the specified action time and, if a F-PDCH is assigned, the mobile station shall start the continuous R-CQICH as defined in [3].
  

15. Reverse Supplemental Channel Assignment Mini Message: The mobile station shall process this message as follows:

The mobile station shall send a Mobile Station Reject Order with the ORDQ field set to ‘00000111’ (message can not be handled by the current mobile station configuration), if any of the mobile station’s reverse supplemental channel configuration parameters for the corresponding Supplemental Channel is NULL, or if the Reverse Packet Data Channel is assigned.

If IGNORE_ESCAM_s is equal to ‘1’, the mobile station shall not process the Reverse Supplemental Channel assignment information in this message.

Otherwise, the mobile station shall store the following information and process the Reverse Supplemental Burst as specified in 2.6.6.2.5.1.2:

• Set REV_SCH_START_TIME_INCL_s[REV_SCH_ID_r] to ‘1’

• REV_SCH_START_TIME_s[REV_SCH_ID_r] = REV_SCH_START_TIME_r

• REV_SCH_DURATION_s[REV_SCH_ID_r] = REV_SCH_DURATION_r

• REV_SCH_NUM_BITS_IDX_s[REV_SCH_ID_r] = REV_SCH_NUM_BITS_IDX_r

• If PILOT_GATING_USE_RATE is set to ‘1’, the mobile station shall perform the following:

• 
  The mobile station shall set PILOT_GATING_USE_RATE to ‘0’ and shall start the continuous reverse pilot at the specified action time and, if a F-PDCH is assigned, the mobile station shall start the continuous R-CQICH as defined in [3].
  

2.6.6.2.5.1.1 Processing of the Forward Supplemental Burst Assignment

A Forward Supplemental Assignment specifies the explicit start time identified by FOR_SCH_START_TIME or the implicit start time (if FOR_SCH_START_TIME_INCL is set to ‘0’), FOR_SCH_DURATION, and SCCL_INDEX of a forward burst assignment. The time interval of duration is specified by FOR_SCH_DURATION (see Table 3.7.3.3.2.37-3) and starts at the time specified by the explicit start time FOR_SCH_START_TIME or the implicit start time (if FOR_SCH_START_TIME_INCL is set to ‘0’). This time interval for a Forward Supplemental Assignment is called the Forward Supplemental Assignment Interval. A value of FOR_SCH_DURATION equal to '1111' indicates infinite duration. The variable SCCL_INDEX_s[FOR_SCH_ID] specifies the rate, QOF index and the Active Set for the Forward Supplemental Channel identified by FOR_SCH_ID for a given Forward Supplemental Assignment. A value of FOR_SCH_DURATION equal to '0000' indicates that the mobile station should stop processing the forward Supplemental Channels at the explicit start time specified by FOR_SCH_START_TIME or the implicit start time (if FOR_SCH_START_TIME_INCL is set to ‘0’). The implicit start time is the time occurring no later than the first 80 ms boundary (relative to System Time) which occurs at least 80 ms after the end of the frame containing the last bit of the Extended Supplemental Channel Assignment Message or the action time of the Universal Handoff Direction Message.

If the mobile station receives an Extended Supplemental Channel Assignment Message with FOR_SCH_CC_INCL set to ‘1’, the mobile station shall begin to use the Forward Supplemental Channel configuration specified by this message at the start time of this Forward Supplemental Assignment.

For each Forward Supplemental Assignment the mobile station shall determine the start time for processing forward supplemental channel as the time for which the following equation holds:

t/(START_TIME_UNIT_s+1)FOR_SCH_START_TIME_r) mod 32 = 0,

where t is the System Time in units of 20 ms.

Figure 2.6.6.2.5.1.1-1 illustrates the scenario in which a second Forward Supplemental Assignment is received while the mobile station is processing the forward supplemental channel according to a previously received assignment. Two cases are displayed in Figure 2.6.6.2.5.1.1-1: Case a) where the first assignment extends beyond the start time of the second assignment and Case b) where the first assignment ends before the second one starts.

Figure 2.6.6.2.5.1.1-1. New Supplemental Channel Assignment Received while a Previous Supplemental Channel Assignment is in Progress

Figure 2.6.6.2.5.1.1-2 shows an example scenario in which the mobile station receives a second Forward Supplemental Assignment before it starts processing the supplemental channel according to the first assignment. In this case, the second assignment simply replaces the first assignment.


Figure 2.6.6.2.5.1.1-2. New Supplemental Channel Assignment Received before a Previous Supplemental Channel Assignment starts

The mobile station shall set FPC_MODE_s to FPC_MODE_SCH_s at the FOR_SCH_START_TIME_s of the forward Supplemental Channel assignment. The mobile station shall set FPC_MODE_s to FPC_MODE_NO_SCH_s at the end of the forward Supplemental Channel assignment.

For each Forward Supplemental Channel assignment corresponding to each Forward Supplemental Channel (identified by FOR_SCH_ID), the mobile station should perform the following:

• If FOR_SCH_DURATION_s[FOR_SCH_ID] is not equal to ‘0000’, then

– If the mobile station is currently processing the Forward Supplemental Channel identified by FOR_SCH_ID, then the mobile station should continue processing the Forward Supplemental Channel identified by FOR_SCH_ID according to the Forward Supplemental Assignment previously received for the Forward Supplemental Channel identified by FOR_SCH_ID up to the time specified by the FOR_SCH_START_TIME_s[FOR_SCH_ID] (i.e., the mobile station should stop processing the forward supplemental channel identified by FOR_SCH_ID at either the time specified by the start time of the new assignment, or at the time the previously received assignment ends, whichever time is earlier).

At the time specified by FOR_SCH_START_TIME_s[FOR_SCH_ID], the mobile station should start processing the Forward Supplemental Channel identified by FOR_SCH_ID for a duration of time specified by FOR_SCH_DURATION[FOR_SCH_ID]_s with FOR_SCH_MUX_s[FOR_SCH_ID_r]_, FOR_SCH_RC_s[FOR_SCH_ID_r], FOR_SCH_CODING_s[FOR_SCH_ID_r], FOR_SCH_FRAME_LENGTH_s[FOR_SCH_ID_r], the QOF index, the Supplemental Channel Active Set indexed by SCCL_INDEX_s[FOR_SCH_ID], and number of information bits per frame (or set of number of bits per frame if FSCH_VAR_TABLE_ID_s[FOR_SCH_ID_r] is not equal to ‘000’) specified by N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r].

If the set of number of bits per frame, N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r], has more than one member and F_INC_RATE_ALLOWED_s is equal to ‘0’, then the following rule applies for the duration of this assignment:

+ Once the mobile station determines the forward Supplemental Channel number of bits per frame, the number of bits per frame in the subsequent Forward Supplemental Channel frames may be any member of the set N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r] which is smaller or equal to the number of bits in the current frame.

– Otherwise, if the mobile station is not currently processing the Forward Supplemental Channel identified by FOR_SCH_ID, then at the time specified by FOR_SCH_START_TIME_s[FOR_SCH_ID], the mobile station should start processing the Forward Supplemental Channel identified by FOR_SCH_ID for a duration of time specified by FOR_SCH_DURATION_s[FOR_SCH_ID] with the QOF index, the Supplemental Channel Active Set indexed by SCCL_INDEX_s[FOR_SCH_ID], and number of bits per frame (or set of number of information bits per frame if FSCH_VAR_TABLE_ID_s[FOR_SCH_ID_r] is not equal to ‘000’) specified by N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r].

If the set of number of bits per frame, N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r] and F_INC_RATE_ALLOWED_s is equal to ‘0’, has more than one member, then the following rule applies for the duration of this assignment:

+ Once the mobile station determines the forward Supplemental Channel number of bits per frame, the number of bits per frame in the subsequent Forward Supplemental Channel frames may be any member of the set N_FSCH_BITS_SET_s[FOR_SCH_ID_r][SCCL_INDEX_r] which is smaller or equal to the number of bits in the current frame.

• If FOR_SCH_DURATION_s[FOR_SCH_ID] is equal to ‘0000’, the mobile station should perform the following:

– If the mobile station is currently processing the Forward Supplemental Channel identified by FOR_SCH_ID, then the mobile station should continue processing the Forward Supplemental Channel identified by FOR_SCH_ID according to the Forward Supplemental Assignment previously received for the Forward Supplemental Channel identified by FOR_SCH_ID up to the time specified by the implicit start time (FOR_SCH_START_TIME_INCL_s is set to ‘0’) or the explicit start time (FOR_SCH_START_TIME_INCL_s is set to ‘1’) (i.e., the mobile station should stop processing the forward supplemental channel identified by FOR_SCH_ID at the time specified by the implicit start time or the explicit start time, or at the time the previously received assignment ends, whichever time is earlier). The mobile station should cancel the pending Forward Supplemental Channel assignment if any.

+ If FOR_SCH_START_TIME_INCL_s is equal to ‘1’, the mobile station should stop processing the Forward Supplemental Channel identified by FOR_SCH_ID at the time specified by FOR_SCH_START_TIME_s[FOR_SCH_ID].

+ If FOR_SCH_START_TIME_INCL_s is equal to ‘0’, the mobile station should stop processing the Forward Supplemental Channel identified by FOR_SCH_ID no later than the first 80 ms boundary (relative to System Time) occurring at least 80 ms after the end of the frame containing the last bit of the Extended Supplemental Channel Assignment Message or the action time of the Universal Handoff Direction Message.

– Otherwise, if the mobile station is not currently processing the Forward Supplemental Channel identified by FOR_SCH_ID, the mobile station should cancel the pending Forward Supplemental Channel assignment if any.

2.6.6.2.5.1.2 Processing of the Reverse Supplemental Burst Assignment

A Reverse Supplemental Assignment specifies the explicit start time identified by REV_SCH_START_TIME or the implicit start time (if REV_SCH_START_TIME_INCL is set to ‘0’), REV_SCH_DURATION, and REV_SCH_NUM_BITS_IDX of a reverse burst assignment. The time interval of duration is specified by REV_SCH_DURATION (see Table 3.7.3.3.2.37-3) and starts at the time specified by the explicit start time REV_SCH_START_TIME or the implicit start time (if REV_SCH_START_TIME_INCL is set to ‘0’). This time interval for a Reverse Supplemental Assignment is called the reverse supplemental assignment interval. A value of REV_SCH_DURATION equal to '1111' indicates infinite duration. A value of REV_SCH_DURATION equal to '0000' indicates that the mobile station should stop transmitting the reverse Supplemental Channels at the explicit start time specified by REV_SCH_START_TIME or the implicit start time (if REV_SCH_START_TIME_INCL is set to ‘0’). The implicit start time is the time occurring no later than the first 80 ms boundary (relative to System Time) which occurs at least 80 ms after the end of the frame containing the last bit of the Extended Supplemental Channel Assignment Message or the action time of the Universal Handoff Direction Message.

If the mobile station receives an Extended Supplemental Channel Assignment Message with REV_SCH_CC_INCL set to ‘1’, the mobile station shall begin to use the Reverse Supplemental Channel configuration specified by this message at the start time of this Reverse Supplemental Assignment.

For each Reverse Supplemental Assignment the mobile station shall determine the start time for processing reverse supplemental channel as the time for which the following equation holds:

t/(START_TIME_UNIT_s+1)REV_SCH_START_TIME_r) mod 32 = 0,

where t is the System Time in units of 20 ms.

Figure 2.6.6.2.5.1.1-1 illustrates the scenario in which a second Reverse Supplemental Assignment is received while the mobile station is transmitting on the reverse supplemental channel according to a previously received assignment. Two cases are displayed in Figure 2.6.6.2.5.1.1-1: Case a) where the first assignment extends beyond the start time of the second assignment and Case b) where the first assignment ends before the second one starts.

Figure 2.6.6.2.5.1.1-2 shows an example scenario in which the mobile station receives a second Reverse Supplemental Assignment before it starts transmitting on the supplemental channel according to the first assignment. In this case, the second assignment simply replaces the first assignment.

For each Reverse Supplemental Channel assignment corresponding to each Reverse Supplemental Channel (identified by REV_SCH_ID), the mobile station shall perform the following:

• The mobile station shall determine, N_RSCH_BITS_s[REV_SCH_ID_r], the number of information bits per Reverse Supplemental Channel frame identified by REV_SCH_ID according to the following rules:

– If RSCH_VAR_TABLE_ID_s[REV_SCH_ID_r] is equal to ‘000’, then:

+ If USE_FLEX_NUM_BITS_s is equal to '0' or if USE_FLEX_NUM_BITS_s is equal to '1' and RSCH_NBIT_TABLE_ID_s[REV_SCH_ID_r] is equal to ‘0000’, then the mobile station shall set the number of information bits per frame, N_RSCH_BITS_SET_s[REV_SCH_ID_r] and number of CRC bits per frame, RSCH_CRC_LEN_SET_s[REV_SCH_ID_r], according to Table 3.7.3.3.2.37-2 using REV_SCH_NUM_BITS_IDX_r as the index to the table.

+ If USE_FLEX_NUM_BITS_s is equal to '1' and RSCH_NBIT_TABLE_ID_s[REV_SCH_ID_r] is not equal to ‘0000’, then the mobile station shall set the number of CRC bits per frame, RSCH_CRC_LEN_SET_s[REV_SCH_ID_r], according to Table 3.7.5.20-1 using CRC_LEN_IDX_s[RSCH_NBIT_TABLE_ID_s[REV_SCH_ID_r]][REV_SCH_NUM_BITS_IDX_r] as the index to the table. The mobile station shall also set the number of information bits per frame, N_SCH_BITS_SET_s[REV_SCH_ID_r], to NUM_BITS_s[RSCH_NBIT_TABLE_ID_s[REV_SCH_ID_r]] [REV_SCH_NUM_BITS_IDX_r].

– If RSCH_VAR_TABLE_ID_s[REV_SCH_ID_r] is not equal to ‘000’, then:

+ The mobile station shall set N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r], the set of indices to the number of information bits per frame as follows:

 If REV_SCH_NUM_BITS_IDX_r is equal to ‘0000’, then N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r] = {REV_SCH_NUM_BITS_IDX_r},

 otherwise, the mobile station shall set (initialize) N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r] = { REV_SCH_NUM_BITS_IDX_r }, and for i=1, …, REV_SCH_NUM_BITS_IDX_r the mobile station shall add REV_SCH_NUM_BITS_IDX_r - VAR_RSCH_RATE_OFFSET_s[REV_SCH_ID_r][REV_SCH_NUM_BITS_IDX_r][i] to the set specified by N_RSCH_BITS_IDX_SET_s[FOR_SCH_ID_r]

+ If USE_FLEX_NUM_BITS_s is equal to '0' or if USE_FLEX_NUM_BITS_s is equal to '1' and RSCH_NBIT_TABLE_ID_s[REV_SCH_ID_r] is equal to ‘0000’, then the mobile station shall determine N_RSCH_BITS_SET_s[REV_SCH_ID_r], the set of number of information bits per frame as follows. The i^th member of the set N_RSCH_BITS_SET_s[REV_SCH_ID_r] is obtained using Table 3.7.3.3.2.37-1 and the i^th member of the set N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r] as the index to the table.

+ If USE_FLEX_NUM_BITS_s is equal to '1' and RSCH_NBIT_TABLE_ID_s[FOR_SCH_ID_r] is not equal to ‘0000’, then

 the mobile station shall set N_RSCH_BITS_SET_s[REV_SCH_ID_r], the set of number of information bits per frame as follows.
The i^th member of the set N_RSCH_BITS_SET_s[REV_SCH_ID_r] is equal to NUM_BITS_s[SCH_NBIT_TABLE_ID_s[REV_SCH_ID_r]] [N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r][i]], where N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r][i] denotes the i^th member of the set N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r].

 the mobile station shall set RSCH_CRC_LEN_SET_s[REV_SCH_ID_r], the set of number of information bits per frame as follows.


The i^th member of the set RSCH_CRC_LEN_IDX_SET_s[REV_SCH_ID_r] is equal to CRC_LEN_IDX_s[RSCH_NBIT_TABLE_ID_s[REV_SCH_ID_r]][N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r][i]], where N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r][i] denotes the i^th member of the set N_RSCH_BITS_IDX_SET_s[REV_SCH_ID_r].

– If the mobile station is currently transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID, then the mobile station may continue transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID with the Walsh cover specified by REV_WALSH_ID_s[REV_SCH_ID][REV_SCH_NUM_BITS_IDX[REV_SCH_ID_r]] according to the current Reverse Supplemental Assignment for the Reverse Supplemental Channel identified by REV_SCH_ID up to the time specified by the REV_SCH_START_TIME_s[REV_SCH_ID_r] (i.e., the mobile station shall stop transmitting on the reverse supplemental channel identified by REV_SCH_ID at either the time specified by the start time of the new assignment, or at the time the previously received assignment ends, whichever time is earlier).

At the time specified by REV_SCH_START_TIME_S[REV_SCH_ID_r], the mobile station may start transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID with REV_SCH_MUX_s[REV_SCH_ID_r]_, REV_SCH_RC_s[REV_SCH_ID_r], REV_SCH_CODING_s[REV_SCH_ID_r], REV_SCH_FRAME_LENGTH_s[REV_SCH_ID_r], the Walsh cover specified by REV_WALSH_ID_s[REV_SCH_ID][REV_SCH_NUM_BITS_IDX_s[REV_SCH_ID_r]] and number of bits per frame (or set of number of information bits per frame if RSCH_VAR_TABLE_ID_s[REV_SCH_ID_r] is not equal to ‘000’) specified by N_RSCH_BITS_SET_s[REV_SCH_ID_r].

If the set of number of bits per frame, N_RSCH_BITS_SET_s[REV_SCH_ID_r], has more than one member and R_INC_RATE_ALLOWED_s is equal to ‘0’, then the following rule applies for the duration of this assignment:

+ Once the mobile station transmits n number of bits per Reverse Supplemental Channel specifies by REV_SCH_ID, where n is a member of the set N_RSCH_BITS_SET_s[REV_SCH_ID_r], the mobile station shall not transmit at a rate higher than the one specifies by n information bits per frame for the duration of the assignment.

– If the mobile station is not currently transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID_r, then at the time specified by REV_SCH_START_TIME_s[REV_SCH_ID_r], the mobile station may start transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID with the Walsh cover specified by REV_WALSH_ID_s[REV_SCH_ID][REV_SCH_NUM_BITS_IDX_s[REV_SCH_ID_r]] and number of bits per frame (or set of number of information bits per frame if RSCH_VAR_TABLE_ID_s[REV_SCH_ID_r] is not equal to ‘000’) specified by N_RSCH_BITS_SET_s[REV_SCH_ID_r]. If the set of number of bits per frame, N_RSCH_BITS_SET_s[REV_SCH_ID_r], has more than one member and R_INC_RATE_ALLOWED_s is equal to ‘0’, then the following rule applies for the duration of this assignment:

+ Once the mobile station transmits n number of bits per Reverse Supplemental Channel specifies by REV_SCH_ID, where n is a member of the set N_RSCH_BITS_SET_s[REV_SCH_ID_r], the mobile station shall not transmit at a rate higher than the one specifies by n information bits per frame for the duration of the assignment.

• If REV_SCH_DURATION_s[REV_SCH_ID_r] is equal to ‘0000’, the mobile station shall perform the followings:

– If the mobile station is currently transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID, then the mobile station may continue transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID with the Walsh cover specified by REV_WALSH_ID_s[REV_SCH_ID][REV_SCH_NUM_BITS_IDX[REV_SCH_ID_r]] according to the current Reverse Supplemental Assignment for the Reverse Supplemental Channel identified by REV_SCH_ID up to the time specified by the implicit start time (if REV_SCH_START_TIME_INCL_s is equal to ‘1’) or the explicit start time (if REV_SCH_START_TIME_INCL_s is equal to ‘1’) (i.e., the mobile station shall stop transmitting on the reverse supplemental channel identified by REV_SCH_ID at the implicit start time or the explicit start time, or at the time the previously received assignment ends, whichever time is earlier). The mobile station shall cancel the pending Reverse Supplemental Channel assignment if any.

+ If REV_SCH_START_TIME_INCL_s is equal to ‘1’, the mobile station shall stop transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID_r at the time specified by REV_SCH_START_TIME_s[REV_SCH_ID_r].

+ If REV_SCH_START_TIME_INCL_s is equal to ‘0’, the mobile station shall stop transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID_r no later than the first 80 ms boundary (relative to System Time) occurring at least 80 ms after the end of the frame containing the last bit of the Extended Supplemental Channel Assignment Message or the action time of the Universal Handoff Direction Message.

– Otherwise, if the mobile is not currently transmitting on the Reverse Supplemental Channel identified by REV_SCH_ID, the mobile station shall cancel the pending Forward Supplemental Channel assignment if any.

• If REV_SCH_DTX_DURATION_s is not equal to ‘1111’, the mobile station shall perform the following:

– The mobile station shall maintain a REV_SCH_DTX_TRANSMISSION_COUNTER[REV_SCH_ID_r] counter counting discontinuous transmission time in units of 20 ms as follows:

+ The mobile station shall reset the REV_SCH_DTX_TRANSMISSION_COUNTER[REV_SCH_ID_r] counter to 0:

 For each Reverse Supplemental Channel assignment corresponding to REV_SCH_ID_r, at action time specified by the REV_SCH_START_TIME_r field for that assignment, if included; otherwise at the action time of the message.

 Each time the mobile station resumes transmission on Reverse Supplemental Channelc after discontinued operation on the Reverse Supplemental Channel.

+ The mobile station shall increment the REV_SCH_DTX_TRANSMISSION_COUNTER[REV_SCH_ID_r] counter by one at each 20ms interval for which the mobile station is not transmitting on the Reverse Supplemental Channel during the Reverse Supplemental Channel duration.

– If the REV_SCH_DTX_TRANSMISSION_COUNTER[REV_SCH_ID_r] counter value exceeds REV_SCH_DTX_DURATION_s (i.e., the mobile station discontinues transmission on the Reverse Supplemental Channel for more than the duration specified by REV_SCH_DTX_DURATION_s), the mobile station shall perform the following:

• 
  The mobile station shall not resume transmission on the Reverse Supplemental Channel corresponding to REV_SCH_ID_r.
  
• 
  The mobile station shall send an indication to each affected service instance indicating that the mobile station has terminated transmission on the supplemental channel corresponding to REV_SCH_ID_r due to expiration of the discontinued transmission period.